List questions from perturbation-theory

Published on 10 Jan 2017 - 16:45

393

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Singular perturbation of a first order linear differential equation

Published on 12 Jan 2017 - 21:33

532

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Invertibility of perturbed matrices

Published on 13 Jan 2017 - 4:18

33

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Is the following asymptotic relation correct?

Published on 18 Jan 2017 - 23:51

29

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If $\lambda = e^{i\mu}$ and $\mu \simeq 0$, can we have $\lambda^{k} = 1$ for some $k <5$?

Published on 20 Jan 2017 - 12:12

234

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Following Terrence Tao's "When are Eigenvalues Stable?" Post

Published on 25 Jan 2017 - 10:45

51

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Matrix Transformation for expanding gaps between eigenvalues

Published on 25 Jan 2017 - 15:37

48

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Is it correct to replace $O(\epsilon) - O(\delta)$ by $ O(\epsilon)$ if $\epsilon \gg \delta$?

Published on 30 Jan 2017 - 14:49

73

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Doubt in expansion of this perturbation equation

Published on 05 Feb 2017 - 11:34

47

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Damped Linear harmonic oscillator , energy question

Published on 12 Feb 2017 - 22:17

180

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Solving integral equation in Fourier space

Published on 15 Feb 2017 - 16:41

339

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Two-term asymptotic approximation for roots of an equation

Published on 20 Feb 2017 - 8:42

205

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Expanding an eigenvalue equation with a perturbation?

Published on 06 Mar 2017 - 18:08

77

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Approximation of the map $x_{1} = x_{0} + \epsilon f(x_{0})$ by a flow

Published on 10 Mar 2017 - 1:05

646

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Eigenvalue bounds of a perturbed Hermitian matrix

Published on 10 Mar 2017 - 22:36

List Question

root perturbation of a polynomial and the method of dominant balance

Singular perturbation of a first order linear differential equation

Invertibility of perturbed matrices

Is the following asymptotic relation correct?

If $\lambda = e^{i\mu}$ and $\mu \simeq 0$, can we have $\lambda^{k} = 1$ for some $k <5$?

Following Terrence Tao's "When are Eigenvalues Stable?" Post

Matrix Transformation for expanding gaps between eigenvalues

Is it correct to replace $O(\epsilon) - O(\delta)$ by $ O(\epsilon)$ if $\epsilon \gg \delta$?

Doubt in expansion of this perturbation equation

Damped Linear harmonic oscillator , energy question

Solving integral equation in Fourier space

Two-term asymptotic approximation for roots of an equation

Expanding an eigenvalue equation with a perturbation?

Approximation of the map $x_{1} = x_{0} + \epsilon f(x_{0})$ by a flow

Eigenvalue bounds of a perturbed Hermitian matrix

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